Bacteroides fragilis toxin (BFT) impairs epithelial barrier function of human colon in vitro
AC Schulz, AJ Kroesen, S Dullat, M Fromm, HJ Buhr · Zeitschrift für Gastroenterologie · 2006 · Heft 04
Bibliografische Angaben
Zusammenfassung
Introduction: Enterotoxigenic strains of Bacteroides fragilis produce a 20-kDa metalloprotease toxin (BFT) which is known to be associated with diarrheal disease in man. Anaerobic strains of Bacteroides fragilis are normal commensales of the intestinal flora. There is experimental evidence that the BFT alters the barrier function of the epithelial lining by degrading tight junction proteins like occludin, claudins, JAM, and ZO–1. Destruction of the epithelial barrier is paralleled by bacterial translocation, inflammation, and infection. Method: The effect of BFT (culture supernatant, sterile filtration, measurem…